28991925

素因数分解:

$3^4\times 5^2\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:264

約数の個数: 60

約数和(自身を含む): 54614560

約数和(自身を除く): 25622635

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 103, 135, 139, 225, 309, 405, 417, 515, 675, 695, 927, 1251, 1545, 2025, 2085, 2575, 2781, 3475, 3753, 4635, 6255, 7725, 8343, 10425, 11259, 13905, 14317, 18765, 23175, 31275, 41715, 42951, 56295, 69525, 71585, 93825, 128853, 208575, 214755, 281475, 357925, 386559, 644265, 1073775, 1159677, 1932795, 3221325, 5798385, 9663975, 28991925]

約数ペア:

[(1, 28991925), (3, 9663975), (5, 5798385), (9, 3221325), (15, 1932795), (25, 1159677), (27, 1073775), (45, 644265), (75, 386559), (81, 357925), (103, 281475), (135, 214755), (139, 208575), (225, 128853), (309, 93825), (405, 71585), (417, 69525), (515, 56295), (675, 42951), (695, 41715), (927, 31275), (1251, 23175), (1545, 18765), (2025, 14317), (2085, 13905), (2575, 11259), (2781, 10425), (3475, 8343), (3753, 7725), (4635, 6255)]